– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 10 am Wed 12 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 10 am Wed 12 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Wed 12 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Warm (max 24°C on Thu afternoon, min 16°C on Wed night). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Warm (max 25°C on Sat afternoon, min 14°C on Mon night). Wind will be generally light. | |||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  |  | |  |  | | | | |  | | | | | | | |
clear | risk tstorm | risk tstorm | some clouds | risk tstorm | rain shwrs | rain shwrs | risk tstorm | risk tstorm | rain shwrs | clear | clear | some clouds | clear | clear | clear | clear | clear | |
Cloud base (m) | 3850 | 3450 | 2900 | 3150 | 3450 | 6850 | 8350 | 9450 | ||||||||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | 1.5 | 2 | — | 0.4 | 1 | 1.9 | 0.4 | 1.2 | 0.1 | — | — | — | — | — | — | — | — |
max °C | 20 | 22 | 19 | 22 | 24 | 21 | 21 | 24 | 20 | 21 | 25 | 20 | 21 | 23 | 19 | 20 | 22 | 18 |
min °C | 17 | 21 | 16 | 18 | 24 | 17 | 18 | 24 | 16 | 18 | 25 | 16 | 18 | 23 | 15 | 16 | 22 | 14 |
chill °C | 17 | 21 | 16 | 18 | 24 | 17 | 18 | 24 | 16 | 18 | 25 | 16 | 18 | 23 | 15 | 16 | 22 | 14 |
Freezing level m | 3400 | 3550 | 3400 | 3500 | 3600 | 3600 | 3450 | 3500 | 3500 | 3550 | 3850 | 3800 | 3650 | 3700 | 3650 | 3600 | 3500 | 3300 |
 | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | — | 8:28 | — | — | 8:25 | — | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 9mm), mostly falling on Wed night. Warm (max 24°C on Thu afternoon, min 16°C on Wed night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Warm (max 25°C on Sat afternoon, min 14°C on Mon night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
lightning 33km NE of Sudden Valley |  | ||||
lightning 41km NNE of Sedro-Woolley | | ||||
lightning 46km E of Sumas | | ||||
lightning 49km N of Darrington | | ||||
SHIP2307 | |||||
SHIP9863 | |||||
SHIP7505 | |||||
SHIP5940 | |||||
SHIP6471 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.